Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam duoi hoc snippets" » "dam cuoi hoc snippets", "nam duoi hoc snippets", "dam duong hoc snippets", "dam duoc hoc snippets", "dam duoi goc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dam duoi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam duoi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam duoi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam duoi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.